Alonzo sedgwick



(No Model.)

A.. SEDGWICK. BLBVATQR WHEEL.

No. 536,583. Patented Mar. 26,y 1895.

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ALONZO s EDcwIoK,

OE POUGHKEEPSIE, NEW YORK, AssIeNon To ANNIE B. sEDewIoK, or SAME PLACE.

i ELEVATOR-WHEEL.

SPECIFICATION forming part of Letters Patent No. 536,583, dated March 26, 1895. Application filed July 28, 1894. Serial No. 518,848. (No model.)

.To all whom it may concern.-

Be it known that I, ALONZO SEDGWIOK, a citizen of the United States, residing at Poughkeepsie, in the county of Dutchess and State of New York, have invented certain new and useful Improvements in Elevator -Wheels and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. l

My invention relates to an improvement in elevator wheels.

It has for its objects, to provide means for securely holding the spokes of the wheel to the hub and releasing them therefrom for convenience of storage and transportation; furthermore, to provide means to afford a greater holding power of the wheel on the rope and at the same time to present a smooth surface corresponding to the strands of the rope, thus preventing wear and slip of the rope; and, finally to provide a wheel which will be simple and strong of construction, durable in use, and comparatively.inexpensive to manufacture.

With these objects in view the invention consists in certain features of construction and combination of parts, which will be hereinafter fully described and claimed.

In the accompanyingdrawings,-Figure lis a side elevation of an elevator wheel, its supporting shaft being shown in section. Fig. 2 is a detail, enlarged longitudinal sectional view. Fig. 3 is a View in elevation looking at the inner face of one of the hub sections. Fig. 4 is an enlarged detail view of the upper end of one of the spokes; andFig. 5 is an enlarged detail plan View of the same showing the engagement of the rope with one of the spokes.

In the drawings, A, denotes the hub consisting of two parts B B. The part B is provided with a cap BE and has cast on its annular iiange, V shaped lugs which form radial spoke sockets B2. The part B is provided with a shallow annular recess B6, a tenon or engagement B7 to fit into the cap B5, an annular shoulder B8 and a collar or sleeve B3.

C, denotes the spokes having forked free ends. The forks may be cast integral with the spokes, or as shown in the drawings, they may consist of separate parts bolted to the spokes. In either event,'the forks will diverge from the body of the spokes and their opposing faces will be smoothand project inward to form longitudinal, rounded, rope grasping portions C2. These grasping portions C2 are preferably, but not necessarily, -arranged on opposite sides of aline drawn vertically through the parts'C C', so that each portion will engage the rope between its vstrands (as is clearly shown in Fig. 5), thus obtaining a better graspupon the rope and preventing its slipping, while at the same time it obviates the need of the usual rough frictional contact which tends to quickly wear the rope.

D denotes the supporting shaft having a groove D', upon which is slipped the parts B B of the hub. The spokes are now placed in their sockets and bolts B9'inserted through coincident holes in the parts B B and the nuts B10 are then screwed upon the lower ends of the bolts, and thus clamping the parts B B together and forcing the bases B which are slightly raised at or near the center opposite B, so that the spokes will be sprung slightly into the recess B6 and be more effectually retained in position. It- Will readily be seen that this annular recess and the raised center of the opposing ba'ses B permit each spoke to yield under the pressure of the bolts sufticiently to overcome the slight irregularity of the different parts which is usual in all cases where expensive, accurate tittings are not used. In addition to this advantage the spring of the spokes acts as a check to keep the boltfnuts from loosening; and thus each spoke is held independently but firmly in its seat. Akey, D2 is now inserted in the groove D and a set screw B4 turned th rough the collar or sleeve B3 Ato hold the hub to the shaft.

In operation, the rope E will be grasped at two points of its length between its strands, so thatit will be firmly held in the forks during the revolution of the wheel and be smoothly and easily released as the wheel continues to revolve and the spokes pass downward away from supporting contact with the rope. The rounded rope-grasping surfaces prevent the usual frictional chafmg of the rope and at the IOO . l i Y same time firmly engage the strands and prevent slipping.

From the foregoing description, taken in connection with the accompanying drawings, the operation and advantages of the invention will be apparent. Instead of forming the forks with the rope grasping surfaces at points on dierent sides of a vertical line drawn through the spokes, these surfaces may be directly opposite; but in that event the surfaces will not engage the rope at two points between its strands at the same time, owing to the twist of the strands, and therefore the holding power of the forks would be somewhat lessened.

Having thus described my invention, what I claim, and desire to secure by Letters Paten t, is-

l. In combination the part B provided with an annular recess and bolt holes, the part B having corresponding bolt holes and radial recesses having bases with raised centers, spokes provided with bolt holes coincident with the aforesaid bolt holes, and bolts for clamping independently the spokes to the parts B B', substantially as described.

2. In a wheel the combination with a hub, of spokes secured thereto and provided at their outer end with forks having inwardly curved rope-grasping faces for holding securely the strands of a rope, substantially as described.

3. In awhee] the combination with ahuo, of the spokes secured thereto and provided at their outer ends with forks curved inward to form rope-grasping surfaces, said surfaces being ont of alignment whereby they will grasp the rope between its strands at different points in the length of the rope, substantially as described.

4. In an elevator wheel, a series of spokes provided at their outer ends with forks curved inward to form ropegrasping surfaces, said surfaces being out of alignment, substantially as and for the purpose described.

5. In an elevator Wheel, a series of spokes provided at their outer ends with forks, the members of which diverge outward and the inner faces of which are curved inward to form rope-grasping surfaces, substantially as and for the purpose described.

6. An elevator wheel comprising a hub consisting of two parts B B', the part B provided with a cap B5, V shaped lugs to form radiating angular spoke sockets, bolt holes extending through said sockets, the part B being provided with an enlargement B", an annular shoulder B8, a collar B3 and corresponding bolt holes, spokes having apertured angularinner ends seated in said spoke sockets, forks carried by their outer ends, and bolts for clamping the spokes to the parts B B', in combination with a grooved shaft, a key seatedin said groove for locking the hub to the shaft, and a set screw for locking the key to the shaft, substantially as described.

'7. An elevator Wheel comprising a hlb consisting of two parts B B', the part B provided With a cap B5, V shaped lugs to form spoke sockets whose bases are slightly raised at the center, bolt holes extending through said sockets, the part B being provided with an enlargement BT, an annular shoulder B8,

an annular recess, a collar B3, and corresponding bolt holes, spokes having apertured angular inner ends seated in said spoke sockets, forks carried by their outer ends, and bolts for clamping the spokes to the parts B B', substantially as described.

In testimony whereof I affix my signature in presence of two Witnesses.

ALONZO SEDGWICK. W'itnesses:

STEPHEN G. GUERN'SEY, IRVING ELTING. 

